As part of their normal function, many proteins bind to dna briefly and then release it again. which types of interactions might be involved in these transient protein-dna interactions?

Non-covalent interactions.

Explanation:

DNA is present as genetic material in all the living organism except some viruses. DNA also perform important other functions - code for proteins, used as a source of energy.

The DA binds with protein to perform their functions. These proteins may acts as activator for DNA. The proteins binds in the non covalent interactions ( ionic bonding, hydrogen bonding, vanderwalls and hydrophobic interaction) so that proteins may easily detach from the proteins. These interactions helps in the attachment and easily detachment of proteins from DNA.

Thus, the correct answer is non-covalent interaction.

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